Regardless of how many EquationNumbered cells are above or below, every new EquationNumbered cell that I add in my notebook shows (1) as the equation number.
Is there a way to correct the equation numbering?
This is more of a workaround than a solution. This approach may be useful as a starting point to debug the notebook.
I don't see this as a solution as more knowledgeable folks such as Mr. Honeychurch may have much better input. While this worked - there are probably better approaches.
To locate points where equation numbering re-starts at (1)
The equation numbers should now be sequential.
The natural follow on is to convert the Text cells back to Section and Subsection, ... headings - watching for issues with equation numbers.